WO2020000984A1 - Dispositif de microphone et terminal portable - Google Patents

Dispositif de microphone et terminal portable Download PDF

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Publication number
WO2020000984A1
WO2020000984A1 PCT/CN2018/125583 CN2018125583W WO2020000984A1 WO 2020000984 A1 WO2020000984 A1 WO 2020000984A1 CN 2018125583 W CN2018125583 W CN 2018125583W WO 2020000984 A1 WO2020000984 A1 WO 2020000984A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
magnetic
magnetic circuit
reinforcing
voice coil
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Application number
PCT/CN2018/125583
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English (en)
Chinese (zh)
Inventor
王兴龙
赵国栋
蔡晓东
刘春发
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歌尔股份有限公司
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Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020000984A1 publication Critical patent/WO2020000984A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • the invention relates to the technical field of electroacoustics, and in particular, to a sound generating device and a portable terminal.
  • the main purpose of the present invention is to provide a sounding device, which aims to solve the technical problem that the existing sounding device that realizes two-way sound is difficult to be widely used due to its large size.
  • the sound generating device includes a first vibration system, a second vibration system, and a magnetic circuit system, wherein the first vibration system includes a first diaphragm and a first diaphragm disposed on the first diaphragm. A voice coil facing one side of the magnetic circuit system; the second vibration system includes a second diaphragm opposite to the first diaphragm, and a reinforcing portion is combined at a middle position of the second diaphragm;
  • the magnetic circuit system is provided with a avoidance portion at a position corresponding to the voice coil, and the reinforcement portion is provided with an extension portion extending in a direction close to the voice coil; the extension portion may pass through the avoidance portion And fixed to the voice coil.
  • the second diaphragm includes a central portion located at an intermediate position, a folded ring portion located outside the central portion, and a fixed portion integrally provided with the folded ring portion;
  • the reinforcing portion includes a reinforcing portion body, and The reinforcing portion body fits the central portion, and the extension portion is formed by extending from an outer edge of the reinforcing portion body.
  • the reinforcing portion is coupled to a side of the central portion facing the magnetic circuit system, and the extension portion may be movably inserted into the avoidance portion and extended to be fixed to the voice coil;
  • the reinforcing portion is coupled to a side of the central portion facing away from the magnetic circuit system, and the second diaphragm is further provided with a mounting hole through which the extension portion passes, and the extension portion can move through. Placed in the avoidance portion and extended and fixed to the voice coil.
  • the reinforcing portion body and the extension portion are an integrated structure.
  • the reinforcement body is provided with a wavy stiffener structure composed of at least one protrusion and at least one depression.
  • the central portion is a flat sheet-like structure, the central portion is provided with a discharging hole, and the protrusion of the wavy stiffener structure is received at the discharging hole.
  • the second diaphragm is rectangular, and the rib structure is extended along the length direction of the second diaphragm.
  • the extending portion is provided with a reinforcing rib on at least one of two opposite side portions in the circumferential direction of the reinforcing portion body, and the reinforcing rib is fixedly connected to the reinforcing portion body.
  • an end of the extending portion near the first diaphragm is bent and extended to form a connecting groove, and the voice coil is connected to a groove wall of the connecting groove.
  • the extension portion includes a main body portion, a first fold portion, and a second fold portion extending upward from the reinforcing portion body; wherein,
  • the first folding portion is formed by folding outward from an upper edge of the main body portion, and the second folding portion is formed by folding upward from an edge of the first folding portion away from the main body portion;
  • the first turning portion and the second turning portion are enclosed to form the connection groove, and the second turning portion is located at the periphery of the voice coil.
  • the extending portion is provided with a reinforcing rib extending in the up-down direction.
  • the extending portion is outwardly formed to form the reinforcing rib.
  • a plurality of the extension portions are provided, and the plurality of extension portions are disposed symmetrically about the center of the voice coil.
  • the folded ring portion of the second diaphragm includes a plurality of folded ring structures, and the recessed directions of any adjacent two folded ring structures are opposite.
  • the magnetic circuit system further includes a central magnetic circuit portion and an edge magnetic circuit portion provided on the magnetic yoke; the central magnetic circuit portion includes a long central magnetic steel;
  • the side magnetic circuit part includes two side magnetic steels, the two side magnetic steels are respectively disposed on both sides of the center magnetic steel, and the magnetic gap is formed between the center magnetic steel and the two side magnetic steels;
  • Two extension portions are provided, and the two extension portions are respectively provided on the outer sides of the two ends of the central magnetic steel.
  • the magnetic yoke is a rectangular flat plate-like structure
  • the two edge magnetic steels are disposed on two long sides of the magnetic yoke
  • the avoidance portion is a short portion provided on the magnetic yoke. Side avoidance notches, and the extension portion is penetrated by the avoidance notches; or
  • the magnetic yoke is a rectangular flat plate-shaped structure, the two edge magnetic steels are disposed on both short sides of the magnetic yoke, and the avoidance portion is an avoidance provided on the long side of the magnetic yoke A notch, and the extension is penetrated by the avoidance notch.
  • the magnetic circuit system is arranged in a circular ring shape.
  • the magnetic circuit system is disposed between the first diaphragm and the second diaphragm, and the voice coil is housed in a magnetic gap of the magnetic circuit system; the magnetic circuit system and the first A first acoustic cavity is formed between a diaphragm, and a second acoustic cavity is formed between the magnetic circuit system and the second diaphragm.
  • the present invention also provides a portable terminal, which includes a housing, the housing has an accommodation cavity inside, and further includes a sound emitting device as described above, the sound emitting device is installed in the accommodation cavity, and the housing is provided with a corresponding A first acoustic hole of the first diaphragm and a second acoustic hole corresponding to the second diaphragm.
  • the casing has a front surface and a rear surface opposite to each other, the first sound hole is provided on the front surface, and the second sound hole is provided on the reverse surface.
  • the sound generating device of the present invention adopts two sets of vibration systems, but adopts only one voice coil and magnetic circuit system to realize two-way sound.
  • the structure occupies a small volume, which is convenient for wide application in portable terminals.
  • the voice coil is directly driven by the magnetic circuit system, and the first diaphragm of the first vibration system is driven to vibrate through the voice coil, so that the air of the first sound cavity is compressed or expanded to produce sound, and at the same time,
  • the connected reinforcement part is driven to further drive the second diaphragm to vibrate, so that the air of the second acoustic cavity is compressed or expanded to make a sound, and the second acoustic cavity is expanded or compressed in conjunction, thereby forming a voice coil to simultaneously drive the first diaphragm and the first diaphragm.
  • the two diaphragms vibrate and make two-way sound.
  • the first vibration system and the second vibration system are simultaneously connected by a voice coil to form a linkage system, which realizes the function of two-way radiation sound.
  • the sound emitting device of the present invention can simultaneously and simultaneously emit sound in two directions of the portable terminal through the first vibration system and the second vibration system.
  • FIG. 1 is a schematic front structural diagram of an embodiment of a sound generating device according to the present invention
  • FIG. 2 is a schematic diagram of a rear structure of the sound generating device in FIG. 1;
  • FIG. 2 is a schematic diagram of a rear structure of the sound generating device in FIG. 1;
  • FIG. 3 is a schematic cross-sectional structure diagram of the sound generating device in FIG. 1, which illustrates a first embodiment of a second diaphragm;
  • FIG. 4 is an enlarged schematic diagram of the right end of the structure in FIG. 3;
  • FIG. 5 is another schematic cross-sectional structure diagram of the sound generating device in FIG. 1, which illustrates a first embodiment of a second diaphragm;
  • FIG. 6 is an enlarged schematic diagram of the right end of the structure in FIG. 5, in which the first embodiment of the second diaphragm is replaced with the second embodiment of the second diaphragm;
  • FIG. 7 is a schematic diagram of an exploded structure of the sound generating device in FIG. 1, which illustrates a first embodiment of a magnetic circuit system
  • FIG. 8 is a schematic structural diagram of a connection between a back cover of the sound generating device and a second vibration system in FIG. 2;
  • FIG. 9 is a schematic structural front view of a connection between the back cover of the sound generating device and the second vibration system in FIG. 8; FIG.
  • FIG. 10 is a schematic front structural diagram of the first embodiment of the reinforcing portion in FIG. 9; FIG.
  • FIG. 11 is a schematic cross-sectional view of the reinforcing portion body in FIG. 10, which illustrates a first embodiment of the reinforcing portion body;
  • FIG. 12 is another schematic cross-sectional view of the reinforcing portion body in FIG. 10, wherein the first embodiment of the reinforcing portion body is replaced with the second embodiment of the reinforcing portion body;
  • FIG. 13 is another schematic cross-sectional view of the reinforcing portion body in FIG. 10, wherein the first embodiment of the reinforcing portion body is replaced with a third embodiment of the reinforcing portion body;
  • FIG. 14 is another schematic cross-sectional view of the reinforcing portion body in FIG. 10, wherein the first embodiment of the reinforcing portion body is replaced with a fourth embodiment of the reinforcing portion body;
  • FIG. 15 is a schematic structural diagram of a rear surface of the reinforcing portion body in FIG. 10; FIG.
  • FIG. 16 is a schematic front structural diagram of a second embodiment of the reinforcing portion in FIG. 1;
  • FIG. 17 is a schematic front view of the third embodiment of the reinforcing portion in FIG. 1; FIG.
  • FIG. 18 is a schematic front structural diagram of the magnetic circuit system in FIG. 1; FIG.
  • FIG. 19 is a schematic structural diagram of a back surface of the magnetic circuit system in FIG. 1;
  • FIG. 20 is a schematic structural diagram of a first embodiment of a voice coil of the sound generating device in FIG. 3;
  • 21 is a schematic front structural diagram of a fifth embodiment of a reinforcing part of a sound generating device according to the present invention.
  • FIG. 22 is a schematic diagram of a rear structure of a fifth embodiment of a reinforcing part of a sound generating device according to the present invention.
  • FIG. 23 is a schematic front structural diagram of an embodiment of a portable terminal according to the present invention.
  • FIG. 24 is a schematic structural diagram of the back of the portable terminal in FIG. 23; FIG.
  • FIG. 25 is a schematic view of a partial cross-sectional structure at B in FIG. 23.
  • fixed may be a fixed connection, a detachable connection, or an integral body; may It is a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction between two elements, unless it is clearly defined otherwise.
  • fixed may be a fixed connection, a detachable connection, or an integral body; may It is a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction between two elements, unless it is clearly defined otherwise.
  • specific meanings of the above terms in the present invention can be understood according to specific situations.
  • the present invention provides a sound generating device. Please refer to FIG. 1 to FIG. 3 and FIG. 18.
  • the sound generating device 210 includes a first vibration system 1, a second vibration system 2, and a magnetic circuit system. 3 of which
  • the first vibration system 1 includes a first vibration diaphragm 11 and a voice coil 12 provided on a side of the first vibration diaphragm 11 facing the magnetic circuit system 3;
  • the second vibration system 2 includes a second vibration diaphragm 2 opposite to the first vibration diaphragm 11.
  • the diaphragm (21a, 21b) and the second diaphragm (21a, 21b) include a central portion 211 and a reinforcing portion (214a, 214b);
  • the magnetic circuit system 3 is provided between the first diaphragm 11 and the second diaphragm (21a, 21b), and the voice coil 12 is housed in the magnetic gap 31 of the magnetic circuit system 3; A first acoustic cavity 4 is formed therebetween, and a second acoustic cavity 5 is formed between the magnetic circuit system 3 and the second diaphragm (21a, 21b);
  • the magnetic yoke 33 of the magnetic circuit system 3 is provided with a avoiding portion 331 at a position corresponding to the voice coil 12, and the reinforcing portion (214 a, 214 b) is provided with an extension portion 2142; the reinforcing portion (214 a, 214 b) is coupled to the central portion 211 On the side facing the first vibration system 1, the extending portion 2142 can be movably inserted into the avoiding portion 331 and extended to be fixed to the voice coil 12.
  • the position when the first diaphragm 11 of the sound generating device 210 is placed upward is used as a reference to define the upper and lower sides, that is, the side of the first diaphragm 11 facing away from the magnetic circuit system 3 is up, and the first The side of a diaphragm 11 facing the magnetic circuit system 3 is downward.
  • the first vibration system 1 can refer to the existing form. Specifically, the voice coil 12 is fixedly connected to the first diaphragm 11 and extends into the magnetic gap 31. The alternating current connected to the voice coil 12 is vibrated by amperage of different magnitudes. The vibration of the voice coil 12 drives the first diaphragm 11 to vibrate, and its energy conversion mode is electric energy-mechanical energy-acoustic energy. In order to adjust the frequency characteristics of the vibration, the first vibration system 1 may further include a weight.
  • the form of the magnetic circuit system 3 can also refer to the existing structure.
  • the magnetic gap 31 can be formed between the central magnetic steel 34 and the side magnetic steel 342, or the side walls of the central magnetic steel 34 and the magnetic yoke 33. between.
  • the shape of the center magnetic steel 34 in a plan view may be a circle, a rounded rectangle, or the like.
  • the sound generating device 210 further includes a housing 6, a front cover 7, and a rear cover 8, and the housing 6 is configured to receive the first vibration System 1, second vibration system 2 and magnetic circuit system 3.
  • the front cover 7 and the rear cover 8 cooperate with the housing 6 to form a protective frame.
  • the edge portion of the first diaphragm 11 for fixing is clamped by the front cover 7 and the housing 6, and the second diaphragm (21a, 21b)
  • the edge portion for fixing is clamped by the back cover 8 and the casing 6.
  • the front cover 7 is provided corresponding to the first vibration system 1 and is provided with a front sound hole 71 for emitting sound
  • the rear cover 8 is corresponding to the second vibration system 2 and is provided with a rear sound hole 81 for emitting sound.
  • the purpose of providing the reinforcing sections (214a, 214b) is mainly to increase the rigidity of the second diaphragm 21a, reduce the divisional vibration, and improve the high-frequency performance.
  • the reinforcing portion (214a, 214b) is made of a material with a higher specific modulus, for example, aluminum composite material, aluminum, aluminum-magnesium alloy, and magnesium-lithium alloy. , Carbon fiber, PEN (polyethylene naphthalate), LCP (Liquid Crystal Polymer), foam, etc.
  • Both the first diaphragm 11 and the second diaphragm (21a, 21b) can generate sounds in the range of human auditory sounds, for example, the frequency range is 20 to 20000HZ. In this way, the user can directly from the front and back directions of the sounding device. Receive audio messages. It can be understood that, in other embodiments, the first diaphragm 11 and the second diaphragm (21a, 21b) can also be used to generate sounds in other frequency ranges, such as the "sound code" corresponding to the human ear's hearing range. This sound can be decoded by the machine to achieve the corresponding signal transmission.
  • the reinforcing parts (214a, 214b) in this embodiment are located on the side of the second diaphragm (21a, 21b) facing the magnetic circuit system 3, so that the reinforcing parts
  • the extension portion 2142 of the portion (214a, 214b) only needs to pass through the avoidance portion 331 to be extended and fixed to the voice coil 12, which is convenient to install and can reduce the volume of the reinforcement portion (214a, 214b).
  • the reinforcing portion (214a, 214b) is coupled to the outside of the central portion 211, and the second diaphragm (21a, 21b) is provided with a mounting hole (not shown) through which the extension portion 2142 passes. (Illustrated), the extension portion 2142 can be movably inserted into the avoiding portion 331 to be extended and fixed to the voice coil 12.
  • the reinforcing portion (214a, 214b) is coupled to the outside of the central portion 211, and the extending portion 2142 of the reinforcing portion (214a, 214b) is sequentially passed through the mounting hole and the avoiding portion 331 to
  • the voice coil 12 can also drive two diaphragms, namely the first diaphragm 11 and the second diaphragm (21a, 21b), through the vibration of a voice coil 12 at the same time. the goal of.
  • the sound generating device 210 of the present invention adopts two sets of vibration systems, but uses only one set of voice coil 12 and magnetic circuit system 3 to achieve two-way sound.
  • the structure occupies a small volume, which is convenient for wide application in portable terminal 100.
  • the magnetic coil system 3 directly drives the voice coil 12 first, and the voice coil 12 drives the first diaphragm 11 of the first vibration system 1 to vibrate, so that the air in the first acoustic cavity 4 is compressed or expanded.
  • the reinforcement parts (214a, 214b) connected to the voice coil 12 are driven to further drive the second diaphragm (21a, 21b) to vibrate, so that the air of the second sound cavity 5 is compressed or expanded to make a sound, and the second sound cavity 5 linkage expansion or compression, thereby forming a voice coil 12 to simultaneously drive the first diaphragm 11 and the second diaphragm (21a, 21b) to vibrate and produce two-way synchronous sound, so that the first vibration system 1 and the second vibration system 2 are simultaneously
  • the voice coil 12 is connected to form a linkage system to realize the function of two-way radiation sound.
  • the sound generating device 210 of the present invention can synchronously emit sound in the forward and reverse directions of the portable terminal 100 through the first vibration system 1 and the second vibration system 2, respectively.
  • the reinforcing portion (214 a, 214 b) includes a reinforcing portion body (2141 a, 2141 b, 2141 c, 2141 d), and a reinforcing portion body (2141 a, 2141 b, 2141 c, 2141d) is attached to the inner side surface of the central portion 211 (that is, the side facing the first vibration system 1), and the extension portion 2142 is formed by extending from the outer edge of the reinforcing portion body (2141a, 2141b, 2141c, 2141d).
  • the extension portion 2142 is used to fixedly connect the voice coil 12 and is driven by the voice coil 12 when the voice coil 12 is operating and vibrates, and transmits the vibration to the second diaphragm (21a, 21b) to cause it to vibrate, and the second acoustic cavity
  • the air of 5 is compressed or expanded to make a sound
  • the extension portion 2142 is formed by extending from the outer edge of the reinforcement body (2141a, 2141b, 2141c, 2141d), which can reduce the installation interference of the extension portion 2142 to the magnetic circuit system 3, and arrange more. reasonable.
  • the extending portion 2142 is provided with a reinforcing rib extending in the vertical direction.
  • the reinforcing ribs formed at the extension portion 2142 can strengthen the structural strength of the extension portion 2142.
  • the extending portion 2142 is convexly formed outward to form a reinforcing rib.
  • the reinforcing ribs at the extension portion 2142 from interfering with the installation of internal components such as the magnetic circuit system 3.
  • a plurality of extension portions 2142 are provided, and the plurality of extension portions 2142 are symmetrically disposed with respect to the center of the voice coil 12, so that it is convenient for processing and forming the extension portion 2142 and also facilitates the reinforcement portion (214a , 214b) fixed installation.
  • the reinforcing portion body (2141a, 2141b, 2141c, 2141d) and the extension portion 2142 are an integrated structure.
  • the reinforcement body (2141a, 2141b, 2141c, 2141d) and the extension portion 2142 are integrally formed, and the process is simpler to implement. , And is conducive to mass production, which can save the process of setting a separate connector, and effectively reduce product costs.
  • the reinforcing portion (214a, 214b) can also have the reinforcing portion of the second vibration system 2
  • the function can also realize the function of fixedly connecting the second vibration system 2 and the voice coil 12, so that the second diaphragm (21a, 21b) of the second vibration system 2 can be driven by the voice coil 12 to vibrate and sound when it is working.
  • the reinforcing portion body (2141a, 2141b, 2141c, 2141d) is provided with a wave shape composed of at least one protrusion and at least one depression. Reinforcement part body (2141a, 2141b, 2141c, 2141d).
  • the body of the reinforcing portion (2141a, 2141b, 2141c, 2141d) has an inner side facing the magnetic circuit system and an outer side facing outward.
  • the reinforcing portion body 2141a has a wavy structure composed of a plurality of protrusions and a plurality of depressions, wherein the highest portion of the protrusion located on the inner side is lower than the reinforcing portion.
  • the inner side surface of the main body 2141a can reduce interference of the wave-shaped reinforcing portion main body 2141a on internal components such as the magnetic circuit system 3.
  • the reinforcing portion body 2141 b has a wavy structure composed of a plurality of protrusions and a plurality of depressions, wherein the highest position of the protrusion located on the inner side is higher than that of the reinforcement.
  • the inner surface of the strong body 2141a is higher than that of the reinforcement.
  • the reinforcing portion body 2141 c has a wavy structure composed of one protrusion and two depressions.
  • the reinforcing portion body 2141 d may be further provided with a reinforcing portion body formed by one protrusion.
  • the reinforcing portion 214a is coupled to the inner side of the central portion 211.
  • the central portion 211 is a flat sheet-like structure.
  • the protrusions of the strong body (2141a, 2141b, 2141c, 2141d) are located at the material removal hole 2111.
  • the second diaphragm (21a, 21b) further includes a folding ring portion (212a, 212b) provided around the central portion 211 and a fixing provided around the folding ring portion (212a, 212b). ⁇ 213.
  • the central portion 211 is provided with a blanking hole 2111 for giving way to the protrusions of the wave-shaped reinforcing portion body (2141a, 2141b, 2141c, 2141d) to avoid interference with its installation.
  • the central portion 211 is used to feel the dense and dense changes in the air in the second acoustic cavity 5 and to generate vibrations, that is, passive radiation.
  • the second diaphragms (21a, 21b) are up and down. The space taken up in the direction is small and can generate sufficiently large amplitudes.
  • the folding ring portions (212a, 212b) provide a certain compliance for the movement of the central portion 211, that is, a certain flexibility, so that the central portion 211 is more easily pushed and vibrates.
  • the folded ring portion 212 a has a structure composed of one protrusion.
  • the folded ring portion 212b is a wavy structure composed of at least one protrusion and at least one depression, that is, it includes a plurality of folded ring structures, and any adjacent two The direction of the depression of each folded ring structure is set to be opposite.
  • the central portion 211 is a flat sheet-like structure, and the central portion 211 is not provided with a hole and is not hollowed out.
  • the reinforcing portion body of the reinforcing portion 214b is not provided with a reinforcing rib, and the reinforcing portion body is connected to the central portion 211 in a close fit.
  • the reinforcing portion (214a, 214b) is coupled to the inner side of the central portion 211, and the extending portion 2142 is provided with a reinforcing rib on at least one of two opposite sides of the reinforcing portion body (2141a, 2141b, 2141c, 2141d) in the circumferential direction. 2148.
  • the reinforcing rib 2148 is fixedly connected to the reinforcing body (2141a, 2141b, 2141c, 2141d).
  • the reinforcing rib 2148 can play a role in strengthening the structural strength of the extension portion 2142.
  • the reinforcing rib 2148 may be provided in a straight plate-like structure or an arc-shaped structure.
  • two opposite sides of the extending portion 2142 on the reinforcing portion body (2141a, 2141b, 2141c, 2141d) in the circumferential direction are respectively provided with reinforcing ribs 2148. It can achieve a better effect of strengthening the structural strength of the extension 2142.
  • the extending portion 2142 is provided with a reinforcing rib 2148 on one of two opposite sides in the circumferential direction of the reinforcing portion body (2141a, 2141b, 2141c, 2141d).
  • an end of the extending portion 2142 near the first diaphragm 11 is bent and extended to form a connecting groove 2147, and the voice coil 12 is connected to a groove wall of the connecting groove 2147.
  • the connecting portion 2147 is formed by bending and extending the extending portion 2142, and the connecting slot 2147 is formed into a bowl-shaped structure.
  • glue can be placed in the groove wall of the connecting groove 2147, and the sound can be passed through the glue.
  • One end of the coil 12 is glued in the connecting groove 2147.
  • the bowl-shaped connecting groove 2147 can more effectively retain the adhesive glue, which is convenient for the installation between the extension 2142 and the voice coil 12. connection.
  • the extension portion 2142 includes a main body portion 2143, a first fold portion 2144, and a second fold portion 2145 extending upward from the self-reinforcing portion body (2141a, 2141b, 2141c, 2141d). ;among them,
  • the first folding portion 2144 is formed by folding outward from the upper edge of the main body portion 2143, and the second folding portion 2145 is formed by folding upward from the edge of the first folding portion 2144 away from the main body portion 2143;
  • the first fold-over portion 2144 and the second fold-over portion 2145 enclose a connecting groove 2147.
  • the second fold-over portion 2145 is located on the periphery of the voice coil 12.
  • the main body portion 2143, the first folded portion 2144, and the second folded portion 2145 can be formed by pressing.
  • the first folded portion 2144 is folded outward, and the second folded portion 2145 is folded upward.
  • the connecting groove 2147 formed by the first turning portion 2144 and the second turning portion 2145 facing inward, and the voice coil 12 is connected inside the connecting groove 2147, that is, the second turning portion 2145 is located on the periphery of the voice coil 12.
  • the second folding portion 2145 can prevent interference with the installation of the voice coil 12 or the magnetic circuit system 3, and the like.
  • the second diaphragms (21 a, 21 b) are rectangular, and the reinforcing body (2141 a, 2141 b, 2141 c, 2141 d) is extended along the length direction of the second diaphragms (21 a, 21 b).
  • the second diaphragm (21a, 21b) of the moment is easier to obtain a larger amplitude, and the body of the reinforcing portion (2141a, 2141b, 2141c, 2141d) is also arranged in a rectangle, which is arranged along the first
  • the two diaphragms (21a, 21b) are extended in the length direction to better fit the second diaphragm (21a, 21b).
  • the magnetic circuit system 3 further includes a central magnetic circuit portion and an edge magnetic circuit portion provided on the magnetic yoke 33; the central magnetic circuit portion includes a long bar
  • the central magnetic steel 34, the side magnetic circuit part includes two sides of the magnetic steel 342, the two sides of the magnetic steel 342 are respectively disposed on both sides of the center magnetic steel 34, and a magnetic gap 31 is formed between the center magnetic steel 34 and the two sides of the magnetic steel 342;
  • Two extension portions 2142 are provided, and the two extension portions 2142 are respectively provided on the outer sides corresponding to the two ends of the central magnetic steel 34.
  • the center magnetic steel 34 is provided at the bottom of the magnetic yoke 33, and the top of the center magnetic steel 34 is further provided with a magnetic conductive plate 35, the center magnetic steel 34 and the edge magnetic steel 342.
  • a magnetic gap 31 accommodating the voice coil 12 is formed therebetween; at least one of the central magnetic circuit portion and the side magnetic circuit portion is provided with a permanent magnet.
  • the magnetic circuit system may be configured as a single magnetic circuit system, or a three magnetic circuit system, or the like.
  • the first diaphragm 11, the second diaphragm (21a, 21b), and the central magnetic steel 34 are all elongated, and the first diaphragm 11 and the second diaphragm (21a) 21b) and the long axis of the central magnetic steel 34 are located in the same vertical plane.
  • the magnetic yoke 33 is a rectangular flat plate-like structure, and two side magnetic steels 342 are disposed on both long sides of the magnetic yoke 33 and extend.
  • the portion 2142 is penetrated by the avoidance portion 331 on the short side of the magnetic yoke 33 (in this embodiment, the avoidance portion 331 is an avoidance notch provided on the short side of the magnetic yoke 33); or,
  • the magnetic yoke 33 is a rectangular flat plate-like structure. Two side magnetic steels may also be provided on both short sides of the magnetic yoke 33.
  • the extension 2142 is provided by an escape portion located on the long side of the magnetic yoke 33.
  • the avoidance portion 331 may be an escape clearance provided on the long side of the yoke 33.
  • the magnetic circuit system is set in a circular ring shape. Accordingly, the first diaphragm And the second diaphragm is also set in a circular shape.
  • the vertical plane is a plane parallel to the up-down direction. Since the first diaphragm 11 and the second diaphragm (21a, 21b) are rectangular, the central magnetic steel 34 is also set to have an external shape.
  • the rectangular strip shape has a corresponding rectangular shape of the sound emitting device 210. Compared with a circular shape, this structure has higher space utilization efficiency when applied to the portable terminal 100.
  • the long first diaphragm 11 and the second diaphragm (21a, 21b) are easier to obtain larger amplitude.
  • the first diaphragm 11 includes a central portion, a folded ring portion provided around the central portion, and a fixed portion provided around the folded portion.
  • the central portion of the first diaphragm 11 is a planar sheet structure.
  • the space occupied by the first diaphragm 11 in the up-down direction is small, and a sufficiently large amplitude can be generated.
  • the sound generating device body provided by the present invention forms a thin structure in the up-down direction as a whole, so that it is easier to apply to a flat installation space.
  • the voice coil 12 may be designed into a circle as shown in FIG. 20 (for example, when it is applied to a circular sounding device) as shown in FIG. 20, or may be designed into a square, a track shape, an oval shape, or other shapes.
  • the present invention also proposes a portable terminal 100. Please refer to FIG. 23 to FIG. 25.
  • the portable terminal 100 includes a housing 110.
  • the housing 110 has a receiving cavity 120 therein.
  • the portable terminal 100 further includes a sound emitting device 210.
  • the sound generating device 210 is installed in the accommodating cavity 120.
  • the housing 110 is provided with a first sound hole 130 corresponding to the first diaphragm 11 and a second sound hole 140 corresponding to the second diaphragm (21a, 21b).
  • the first sound hole 130 is opened at a position of the casing 110 directly opposite the first diaphragm 11, and the second sound hole 140 is opened at the housing 110. Is directly opposite the second diaphragm (21a, 21b).
  • the housing 110 of the portable terminal 100 has opposite front and rear sides, wherein the first sound hole 130 is provided on the front side and the second sound hole 140 is provided on the reverse side, thereby realizing two-way synchronous sounding.

Abstract

La présente invention concerne un dispositif de microphone comprenant un premier système de vibration, un second système de vibration, et un système de circuit magnétique. Le premier système de vibration comprend un premier diaphragme et une bobine acoustique disposée sur un côté du premier diaphragme faisant face au système de circuit magnétique. Le second système de vibration comprend un second diaphragme disposé à l'opposé du premier diaphragme. Une partie de renforcement est combinée à une position intermédiaire du second diaphragme. Une partie en relief est disposée à une position correspondant à la bobine acoustique sur le système de circuit magnétique. Une partie d'extension disposée sur la partie de renforcement s'étend dans une direction proche de la bobine acoustique. La partie d'extension peut passer à travers la partie en relief et est reliée de manière fixe à la bobine acoustique. Le dispositif de microphone de la présente invention est pourvu de deux ensembles de systèmes de vibration, mais seul d'un ensemble de bobines acoustiques et un système de circuit magnétique sont utilisés, de sorte qu'une structure d'émission de son synchronisée bidirectionnelle occupe moins d'espace. L'invention est bien adaptée à une utilisation généralisée dans les terminaux portables.
PCT/CN2018/125583 2018-06-25 2018-12-29 Dispositif de microphone et terminal portable WO2020000984A1 (fr)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108924709B (zh) * 2018-06-25 2020-12-08 歌尔股份有限公司 发声器件及便携终端
CN108632729B (zh) 2018-06-25 2020-08-21 歌尔股份有限公司 发声器件及便携终端
CN209390343U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 发声器件
CN110446145A (zh) * 2019-06-26 2019-11-12 瑞声科技(新加坡)有限公司 发声器件
WO2021119995A1 (fr) * 2019-12-17 2021-06-24 瑞声声学科技(深圳)有限公司 Dispositif de génération de sons
CN111988711B (zh) * 2020-08-31 2021-11-30 歌尔股份有限公司 扬声器单体和电子终端

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102333270A (zh) * 2011-07-15 2012-01-25 瑞声声学科技(深圳)有限公司 发声器
CN105681983A (zh) * 2016-01-12 2016-06-15 瑞声光电科技(常州)有限公司 扬声器
CN106303857A (zh) * 2016-09-07 2017-01-04 深圳天珑无线科技有限公司 双振膜扬声组件及扬声装置
CN206118013U (zh) * 2016-09-26 2017-04-19 常州阿木奇声学科技有限公司 一种扬声器
CN108632729A (zh) * 2018-06-25 2018-10-09 歌尔股份有限公司 发声器件及便携终端
CN108924709A (zh) * 2018-06-25 2018-11-30 歌尔股份有限公司 发声器件及便携终端

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110176703A1 (en) * 2009-07-29 2011-07-21 Pioneer Corporation Speaker device
CN104811875A (zh) * 2015-04-29 2015-07-29 朝阳聚声泰（信丰）科技有限公司 一种双向扬声器
CN105491489B (zh) * 2015-12-31 2019-04-23 歌尔股份有限公司 具有振动功能和发声功能的多功能装置
CN205961439U (zh) * 2016-07-20 2017-02-15 瑞声科技(新加坡)有限公司 扬声器
CN207475845U (zh) * 2017-11-29 2018-06-08 歌尔科技有限公司 一种振膜以及包括该振膜的发声器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102333270A (zh) * 2011-07-15 2012-01-25 瑞声声学科技(深圳)有限公司 发声器
CN105681983A (zh) * 2016-01-12 2016-06-15 瑞声光电科技(常州)有限公司 扬声器
CN106303857A (zh) * 2016-09-07 2017-01-04 深圳天珑无线科技有限公司 双振膜扬声组件及扬声装置
CN206118013U (zh) * 2016-09-26 2017-04-19 常州阿木奇声学科技有限公司 一种扬声器
CN108632729A (zh) * 2018-06-25 2018-10-09 歌尔股份有限公司 发声器件及便携终端
CN108924709A (zh) * 2018-06-25 2018-11-30 歌尔股份有限公司 发声器件及便携终端

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